User guide

Chapter 3 - Using the Command Line Interface (CLI) 3-51
Vipersat Configuration
The value entered sets the minimum power level allowed by all SCPC modula-
tors.
Target EbNo
The Target EbNo is the desired operating receive level for closed loop servo
control. This is the value used by the receiving CDM-570/570L for comparison
with the actual received Eb/No. This information is sent back to the transmitting
terminal for output power level adjustment as necessary.
Enter T at the command prompt in the DPC Configuration screen to display
the Target EbNo dialog shown in figure 3-65. The default value for this parame-
ter is 10 dB.
Figure 3-65 Target EbNo prompt
Target Range
The Target Range command sets the range on either side of the Target EbNo
value, plus or minus, where the received level at the demodulator is acceptable
and no adjustment to the output power of the transmitting terminal is necessary.
Enter R at the command prompt in the DPC Configuration screen to display
the Target Range dialog shown in figure 3-66. The default value for this param-
eter is 0.2 dB.
Figure 3-66 Target Range prompt
Speed Up EbNo
Normally, the DPC message is sent every 60 seconds from each terminal in the
network. If the received Eb/No level at the demodulator drops below the Speed
Up EbNo set value, the corresponding terminal increases its message send rate